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(No Model.) 2 Sheets-Sheet 1.

G. W. COOK. FASTENER FOR THE MEETING RAILS 0F SASHES'. No. 426,986. Patented Apr. 29, 1890.

(No Model.) 2 Sheets-Sheet 2..

G. "W. 000K.

FASTENER FOR THE MEETING RAILS OP SASHES.

No. 426,986. Patented Apr. 29, 1890.

I I I messe m: N.) m PEYERQ co wow u-mo wnsnmuran n c UNITED STATES PATENT OFF CE.

GEORGE IV. COOK, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE CHICAGO HARDIVARE MANUFACTURING COMPANY, OF SAME PLACE.

FASTENER FOR THE MEETING-RAILS OF SASHES.

SPECIFICATION forming part of Letters Patent No. 426,986, dated April 29, 1890.

Application filed November 8,1889. $eria1N0. 329,650. (N6 model.)

To all whom, it may concern:

Be it known that I, GEORGE W. COOK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sash-Locks, of which the following is a specification.

The object of myinvention is to provide an improved lock or fastener for the meetingrails of sashes.

In the construction of devices of the character hereinabove mentioned the problems to be solved are several and difficult, and very many sash-locks have been made with a view to overcoming said difficulties.

The essential feature of a perfect sash-lock is the capacity to draw or bring the meetingrails with their upper sides in the same plane, while their adjacent faces are drawn tightly and securely together. In most of the common forms of sash-locks a locking-stud is provided, which is secured to one of the meeting-rails on its upper side, and the other meeting-rail bears a rotatable locking cam or plate, which by its rotation is adapted to en-. gage the stud and thereby lock the rails together.

My invention comprises a locking-stud to be secured to the upper. side of one of the meeting-rails and a parti-circular lockingplate adapted to be eccentrically pivoted to the upper side of the other rail and adapted, when rotated, to engage the locking-stud, whereby to draw the meeting-rails into alignment and cause them to impinge closely upon each other. The locking-plate has its upper face inclined from the cam-edge toward the pivotal point, and the locking-stud has a beveled face, which is adapted to ride upon this inclined plane. The locking-plate being eccentrically pivoted, the result of its movement is not only to lift the sash to which the locking-stud is secured by reason of the camedge above mentioned, but also by the action of the beveled face of the stud upon the inclined plane of the locking-plate the rails are drawn tightly and snugly together.

In the accompanying drawings, Figure 1 is a plan view of the device, showing the parts under side is beveled or formed on a reentrant angle.

D is a base-plate, which is secured to the meeting-rail B, and which will, preferably, have an inclined upper face and a lockingseat cl therein.

E is a parti-circular locking-plate, which is' eccentrically pivoted to the plate D, and which has a parti-circular cam-edge e to f. The lower side of the locking-plate will be beveled to conform to the upper face of the baseplate D, and ithas the engaging-lug e, and the upper face of the locking-plate is inclined or beveled from the cam-edge toward the pivot E. The cam-plate will have a thumbpiece E by which it will be conveniently manipulated.

In use, when it is desired to lock the meet ing-rails, the locking-plate will be turned until its cam-edge engages the locking projection of the stud, whereupon the farther rotation of the locking-plate will lift the lockingstud with its sash by reason of its upward inclination, while at the same time the tworails will be tightly drawn together by reason of the inclined face of the locking-stud being drawn or pulled downwardly on the inclined face of the locking-plate. In the locked position the lug c rests in the seat d.

The distinguishing characteristic of this device is the provision of the cam-edge, which effects the lifting, in combination with the inclined planes, which effect the drawing together of the rails.

A device organized as above described accomplishes the desired results of bringing the two rails into perfect alignment, and at the same time drawing them tightly together Without any undue friction or straining of the adapted to be secured to the other rail, said 10 parts, the movements being natural and withlocking-plate having a peripheral cam-edge,

out any binding Whatever. and its upper face being inclined from said I c1ai1n edge toward the pivot, substantially as de- 5 A sash-lock comprising, in combination, a scribed.

fixed locking-stud to be secured to one of the GEORGE \V. COOK. meeting-rails and having alock in g projection \Vitnesses: With an inclined face, a parti-circulm look- 0. C. LINTHIGUM,

ing-plate eccentrically pivoted upon a base E. L. HUBER. 

